Nissan Armada P0420 - Catalyst Efficiency

Diagnostic tips. How to turn your headache into a cakewalk.

[@bryanpineda9150]

Great job buddy. Keeep it up. Thanks for helping all of us

[@97TRAKIN]

Swapping the 02 sensors and seeing if the problem follows the swap is a damn good idea. Thank you!

[@devoncampbell4039]

Outstanding Performance 👍 😎

[@abimaelacosta7001]

Can you tell me where is the bank 1 and bank 2 a Nissan Armada 2006

[@devoncampbell4039]

Learnt a lot of Good information 👍 👌

[@ruckitupkno7728]

Nice Video Matthew- I have the same issue a p0420 and a p0430. how do i fond out if its not my catalyc or my o2 sensors. Please advise.

[@pieabram3346]

Me too same issue ????

[@tommyhajimoto6968]

Matthew I'm getting a code P0420 in a 2006 Nissan Armada, are you talking about the driverside downstream oxygen or catalytic converter?

[@mameryjazz]

same problem on an 04 armada. can upstream o2 sensors cause the p0420 code as well? i have both p0420 and p0430 along with p1273 and p1283 wchivh refer to both front 02. fuel trim reads perfect to me, no more than 5% on both banks.